Printer s chase



(No'ModeL) v v v H. J. HARDING 8113. A. OSBORN.

' PRINTER'S CHASE.

No 570,928. Patented Nov. 1 0, 1896.

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HORACE J. HARDING AND BEN A. OSBORN, OF ALBION, NEW YORK.

PRINTERVS CHASE.

SPECIFICATION forming part of Letters Patent No. 570,928, dated November10, 1896.

Application filed December 31, 1895. fierial No. 574,274. (No model.)

, pivoted in slots formed in one side and end of the chase and operatedby means of a lever inserted in slots in the eccentrics, therebyproducing pressure on end and side sticks.

In the accompanying drawings, Figure 1 is a plan view of a chase made inpursuance of our invention. Fig. 2 is a View of the side of the chasewith eccentrics locked. Fig. 3 is a view of the eccentric, full size.

A A is the frame of the chase, made in the customary manner. Aboutmidway between the center of one side and end, respectively,

and the corners of the frame rectangular slots D D are cut from theouter to the inner face of the frame. Within the slots are pivoted, bymeans of transverse pivot screws or rivets, eccentrics E E, which areoperated by a lever F, inserted in the slot Gin the eccentrics,revolving the eccentrics inwardly, producing a powerful pressure on theside and end sticks B and 0, thereby locking the form in the chase. Thecenter of the pivot on which the eccentrics E E revolve is aboutthree-sixteenths of an inch from the center.

The dotted line H 11 represents are described by the eccentric inrevolving, the increase being very gradual after reaching a pointforty-five degrees from the greatest point of pressure.

A segment of the eccentric opposite the part of the greatesteccentricity is cut away,whereby it is flush with the outside of theframe when the chase is locked and with the inside when unlocked. Innewspaper-printing we have the chase of the proper size as to require noextra blocking.

When the form is properly justified and the end and foot sticks inplace, each eccentric is partially revolved in succession, bringing theform well together. Then each eccentric is revolved as far as the slotwill allow, giving sufficient pressure to lock securely, but not enoughto spring the chase.

In small job-chases we revolve the eccentric only as far as it isnecessary to give sufficient pressure to insure safe locking, as theeccentric willhold if not turned to the highest point.

\Ve claim as our invention The combination in a chase for newspaper andjob printing having slots in the frame, eccentrics pivoted in the slotswith the segment of the eccentrics which is opposite the part of thegreatest eccentricity, being cut 65 away whereby, when the chase islocked no part of the eccentrics projects outside the frame and whenunlocked no part projects inside same, and the eccentrics each beingprovided with a slot in which to insert an operating-lever,substantially as described.

HORACE J. HARDING. BEN A. OSBORN. lVitnesses:

JOHN B. THURSTON, ASHER F. KING.

